<template>
  <div>
    <el-form ref="deptForm" :model="form" :rules="rules" label-width="120px">
      <el-form-item label="部门名称" prop="name">
        <el-input v-model="form.name" style="width:80%" placeholder="1-50个字符" />
      </el-form-item>
      <el-form-item label="部门编码" prop="code">
        <el-input v-model="form.code" style="width:80%" placeholder="1-50个字符" />
      </el-form-item>
      <el-form-item label="部门负责人" prop="manager">
        <el-select v-model="form.manager" style="width:80%" placeholder="请选择">
          <el-option v-for="item in list" :key="item.id" :value="item.username" :label="item.username" />
        </el-select>
      </el-form-item>
      <el-form-item label="部门介绍" prop="introduce">
        <el-input v-model="form.introduce" style="width:80%" placeholder="1-300个字符" type="textarea" :rows="3" />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" size="small" @click="hSubmit">确定</el-button>
        <el-button size="small" @click="hCancel">取消</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
import { addDepartments, getDepartmentsDetail, getEmployeesSimple, editDepartments } from '@/api/departments'
export default {
  props: {
    originList: {
      type: Array,
      required: true
    },
    id: {
      type: String,
      required: true
    },
    isEdit: {
      type: Boolean,
      required: true
    }
  },
  data() {
    // 自定义检验规则函数(校验部门编号)  value:自己输入的值
    const existCodeValid = (rule, value, callback) => {
      // 验证输入的编码value在所有的部门中是否存在
      let existCodeList = this.originList.map(item => item.code)
      // 当编辑状态时
      if (this.isEdit) {
        // 根据id 将当前编辑的部门id从所有部门中移除   处理编辑部门是code的验证
        existCodeList = this.originList.filter(item => item.id !== this.id).map(item => item.code)
      }
      console.log(existCodeList, 'existCodeList')
      if (existCodeList.includes(value)) {
        // 存在 检验失败
        callback(new Error(`部门编码: ${value}已存在`))
      } else {
        // 不存在 放行
        callback()
      }
    }
    // 校验部门名称
    const existNameValid = (rule, value, callback) => {
      // 验证输入的名称value在所有的部门中是否存在
      let existNamelist = this.originList.filter(item => item.pid === this.id).map(item => item.name)
      if (this.isEdit) {
        const pid = this.originList.find(item => item.id === this.id).pid // 找到this.id获取当前对象的pid
        const brothers = this.originList.filter(item => item.pid === pid) // 获取同级所有兄弟,包括自己
        existNamelist = brothers.filter(item => item.id !== this.id).map(item => item.name)
      }
      if (existNamelist.includes(value)) {
        // 存在 检验失败
        callback(new Error(`部门名称: ${value}已存在`))
      } else {
        // 不存在 放行
        callback()
      }
    }
    return {
      form: {
        name: '', // 部门名称
        code: '', // 部门编码
        manager: '', // 部门管理者
        introduce: '' // 部门介绍
      },
      rules: {
        name: [
          { required: true, message: '请输入部门名称', trigger: 'blur' },
          { min: 1, max: 50, message: '名称1-50字符', trigger: 'blur' },
          { validator: existNameValid, trigger: 'blur' }
        ],
        code: [
          { required: true, message: '请输入部门编码', trigger: 'blur' },
          { min: 1, max: 50, message: '编码1-50字符', trigger: 'blur' },
          { validator: existCodeValid, trigger: 'blur' }
        ],
        manager: [
          { required: true, message: '请选择部门负责人', trigger: ['change', 'blur'] }
        ],
        introduce: [
          { required: true, message: '请输入部门介绍', trigger: 'blur' },
          { min: 1, max: 300, message: '部门介绍1-50字符', trigger: 'blur' }
        ]
      },
      list: []
    }
  },
  // 解决数据不更新方式3
  // 使用watch侦听器, 侦听id的变化,一旦变化, 就调用loadDepartmentsDetail重新获取详情数据, 重新填充表单
  // watch: {
  //   id: function(newVal, oldVal) {
  //     console.log(newVal, 'newVal')
  //     console.log(oldVal, 'oldVal')
  //     this.loadDepartmentsDetail()
  //   }
  //   /*
  //   id: {
  //     针对于复杂数据类型,可以开启深度侦听或需要 页面一打开就立即加载
  //     handler: function(newVal, oldVal) {
  //       console.log(newVal, 'newVal')
  //       console.log(oldVal, 'oldVal')
  //       this.loadDepartmentsDetail()
  //     }
  //     deep: true // 深度侦听
  //     立即加载:
  //     immediate: true
  //   } */
  // },
  created() {
    // 获取部门
    this.loadEmployeesSimple()
    if (this.isEdit) {
      // 编辑部门
      this.loadDepartmentsDetail()
    }
  },
  methods: {
    // 清空表单:
    resetForm() {
      this.$refs.deptForm.resetFields()
    },
    // 实现新增子部门
    async adAdd() {
      const res = await addDepartments({ ...this.form, pid: this.id })
      console.log(res, '新增子部门')
      // 子传父
      this.$emit('success')
    },
    // 实现编辑部门功能
    async doEdit() {
      const res = await editDepartments(this.form)
      console.log(res)
    },
    // 加载部门详情数据
    async loadDepartmentsDetail() {
      const res = await getDepartmentsDetail(this.id)
      this.form = res.data.data
      // console.log(res.data.data, 'res')
    },
    // 获取部门负责人
    async loadEmployeesSimple() {
      const { data } = await getEmployeesSimple()
      this.list = data.data
      // console.log(data.data, '获取部门负责人')
    },
    // 确定
    hSubmit() {
      this.$refs.deptForm.validate(valid => {
        if (!valid) return
        this.isEdit ? this.doEdit() : this.adAdd()
      })
    },
    // 取消 关闭弹层, 但是弹层在父组件, 需要子传父
    hCancel() {
      this.$emit('close')
    }
  }
}
</script>
